Map<String, String> referenceMap = new HashMap<String, String>();
    referenceMap.put("deleteelementtype", "Delete this particular Tree");
    Long treeID = Long.parseLong(request.getParameter("treeid"));
    PhyloTree pTree = getPhyloTreeService().findByID(treeID);
    /*if (pTree.getStudy() != null) { // It means this tree is tied to analysis step
      referenceMap.put("generalmessage", "This PhyloTree is tied to an Analysis Step.");
    }*/
    
    for (Analysis analysis : pTree.getStudy().getAnalyses()) {
      
      List<AnalysisStep> analysisStepList = analysis.getAnalysisStepsReadOnly();
      
      for (AnalysisStep analysisStep : analysisStepList) {
        
        List<AnalyzedData> analyzedDataSet = analysisStep.getDataSetReadOnly();
        
        for (AnalyzedData analyzedData : analyzedDataSet) {
          
          if (analyzedData instanceof AnalyzedTree) {
             
            if (pTree.getId() == ((AnalyzedTree) analyzedData).getTree().getId()) {
              
              referenceMap.put("generalmessage", "This PhyloTree is tied to an Analysis Step.");
             }
           }
        }
        
      }
      
    }
    referenceMap.put("deleteid", "Tree ID : " + treeID);
    referenceMap.put("objectname", "Tree Label : " + pTree.getLabel());
    return referenceMap;
  }